Hi i have not used Oryx bullets,but have uesd Norma Vulkan 170gr in my 7mm mag on a feral bull hunt.I shot a bull straight between the eyes and bullet penetrated the skull,broke the first 3 vertabrae and stopped under the skin.The bullet did not look too bad and as the shot was only 55 yards the bullet would have hit him at full speed.Hunters shoot a lot of moose with norma a bullets every season in northern Europe